sowhatofit
Member
Hi everybody, long time reader first time poster.
I'll cut to the chase:
Late last fall I was pulling the harrow in second gear when, all of the sudden, the tractor lost most of its power. I dropped the harrow and to my surprise the tractor seemed to run fine.
Thinking it must be a carb issue, I got a rebuild kit (in the interest of full disclosure I purchased it from Tractor Supply - I know, not the best). Put the carb back on it and same issue - no power under load. Thinking it may be a timing issue, I pulled apart the distributor cap and and inspected, cleaned up and gapped the points and messed with the timing, and it seems to run a lot better.
This, however, did not fix the problem. Thinking I missed something in the carb, I pulled it apart and cleaned it (again) with carb cleaner and compressed air. Double checked the float height as well.
Still didn't take care of the issue. On to the governor. Pulled the linkage from the carb apart and removed the pin (as according to the service manual, which I have) and it seems fine. Also tried adjusting the throttle rod to the point where I left about 1/4 inch outside the nut towards the front of the tractor. Didn't make much difference, so I put it back where I found it, which was about 7/8 of an inch outside the nut towards the tractor.
Opened up the governor (pulled the cover on the side) and all appears to be fine (as far as I can tell) except that with WOT the governor appears to be in 'medium' throttle position as shown by the service manual (shown in the photo below), meaning both the idle and high limit bolt/screws don't touch their stops. When I put the throttle back at idle the idle screw will touch, but does not get close to touching at WOT. I understand I can adjust the screw/bolt to touch the stop, but is that necessary?
After all this the tractor runs better, even under a load, but still lacks the power that it had before. It will also occasionally get close to stalling out when really working it, mainly when pulling the harrow through deeper soil.
I'm also thinking the tractor is idling to high. I put a tach on it and it says that its idling at around 900...WOT is around 1600. I've got the idle screw on the side of the carb near the governor linkage turned all the way out.
I've also disconnected the air cleaner to see if that was clogged and have the same low power under load situation.
Also, the tractor appears to have good fuel flow, so I don't think it's an issue of getting fuel to the carb. (Fuel cap vent appears to allow air in and out, I've cleaned the sediment bowl)
Sorry for the lengthy post. At this point I'm willing to try anything. I've read through a ton of posts on this site and others and can't find a resolution to the problem I'm having.
Thanks, and I appreciate any assistance and advice!
I'll cut to the chase:
Late last fall I was pulling the harrow in second gear when, all of the sudden, the tractor lost most of its power. I dropped the harrow and to my surprise the tractor seemed to run fine.
Thinking it must be a carb issue, I got a rebuild kit (in the interest of full disclosure I purchased it from Tractor Supply - I know, not the best). Put the carb back on it and same issue - no power under load. Thinking it may be a timing issue, I pulled apart the distributor cap and and inspected, cleaned up and gapped the points and messed with the timing, and it seems to run a lot better.
This, however, did not fix the problem. Thinking I missed something in the carb, I pulled it apart and cleaned it (again) with carb cleaner and compressed air. Double checked the float height as well.
Still didn't take care of the issue. On to the governor. Pulled the linkage from the carb apart and removed the pin (as according to the service manual, which I have) and it seems fine. Also tried adjusting the throttle rod to the point where I left about 1/4 inch outside the nut towards the front of the tractor. Didn't make much difference, so I put it back where I found it, which was about 7/8 of an inch outside the nut towards the tractor.
Opened up the governor (pulled the cover on the side) and all appears to be fine (as far as I can tell) except that with WOT the governor appears to be in 'medium' throttle position as shown by the service manual (shown in the photo below), meaning both the idle and high limit bolt/screws don't touch their stops. When I put the throttle back at idle the idle screw will touch, but does not get close to touching at WOT. I understand I can adjust the screw/bolt to touch the stop, but is that necessary?
After all this the tractor runs better, even under a load, but still lacks the power that it had before. It will also occasionally get close to stalling out when really working it, mainly when pulling the harrow through deeper soil.
I'm also thinking the tractor is idling to high. I put a tach on it and it says that its idling at around 900...WOT is around 1600. I've got the idle screw on the side of the carb near the governor linkage turned all the way out.
I've also disconnected the air cleaner to see if that was clogged and have the same low power under load situation.
Also, the tractor appears to have good fuel flow, so I don't think it's an issue of getting fuel to the carb. (Fuel cap vent appears to allow air in and out, I've cleaned the sediment bowl)
Sorry for the lengthy post. At this point I'm willing to try anything. I've read through a ton of posts on this site and others and can't find a resolution to the problem I'm having.
Thanks, and I appreciate any assistance and advice!